You searched for "gases"

3475 results found

A novel approach to suprachoroidal haemorrhage drainage

The authors describe a novel surgical technique for external drainage of choroidal detachment / suprachoroidal haemorrhage with a butterfly needle. Six eyes with serous and / or haemorrhagic choroidal detachments (five from complicated cataract surgery with vitreous loss, one globe...

Outcomes after surgery for INS

The purpose of this study was to detail clinical and electrophysical outcomes after extraocular muscle surgery in adults with infantile nystagmus syndrome (INS). This was a single centre prospective case series of 81 patients aged 18-72 years (mean 36); 63%...

BESTi: a new index to detect subclinical keratoconus

In this multicentre, case-control study, the authors develop a new index, named Boosted Ectasia Susceptibility Tomography Index (BESTi), to detect early cases of keratoconus. This index was derived from multiple logistic regression analysis of 22 variables of tomography scans. The...

Using a tumour registry to investigate optic nerve gliomas

This study is a retrospective comparative analysis. Patients with optic nerve glioma and pilocytic astrocytoma were identified through the Surveillance, Epidemiology and End Results (SEER) cancer registry covering a 42-year period using standardised codes. The following data was extracted: basic...

Understanding spaceflight-associated neuro-ocular syndrome (SANS): what do we know?

Introduction Formerly known as visual impairment and intracranial pressure syndrome (VIIP), space-related neuro-ocular syndrome (SANS) is defined by a collection of ophthalmic and neurological findings in astronauts after long-term spaceflight [1]. Changes in the eyeball, such as hyperopic shift, during...

Ophthalmic learning through the lens of cognitivism and constructivism

Learning in ophthalmology is multi-faceted, from understanding the fundamentals of eye anatomy and physiology to higher order skills such as performing cataract and vitreoretinal surgery. Having a strong foundation in the basics is a necessity for higher order knowledge synthesis,...

The Global Vision Database

The overall goal of the Global Vision Database (GVD) [1] is to develop and deploy new and improved evidence on the prevalence of blindness and vision impairment (VI) globally. It is a repository which allows us to assess the causes...

Pituitary tumours: why are they so often missed?

Part 1: Introduction, historical background and Edinburgh connections (see also Part 2 and Part 3) Is there any ophthalmologist who has not missed a pituitary tumour? Hopefully this article will help those currently in practice to avoid such an embarrassment,...

Factors associated with seeking delayed strabismus surgery

The purpose of this study was to investigate the main reasons for delay in strabismus surgery and assess patients’ motivations to undergo strabismus surgery in adulthood. This was a prospective study in the Republic of Moldova of 91 patients with...

Bosch-Boonstro-Schaaff optic atrophy syndrome (BBSOAS) NR2F1 mutation

An experienced ophthalmologist can make an anatomical diagnosis of childhood visual impairment based upon the surgical sieve, i.e., congenital and acquired. But an ophthalmologist cannot work in isolation to make an aetiological diagnosis – one would require the help of...

Ophthalmology in the COVID-19 pandemic

The novel coronavirus pandemic has affected the whole world and forced all of us to think of new ways to manage our day to day personal as well as professional life. I am not going to talk about the clinical...

Glaucoma screening in primary care and community settings

Glaucoma is one of the most common causes of irreversible blindness in the United States due to its insidious progression and diagnosis in late stages. The cost-effectiveness of screening for glaucoma has been debated, and screening of high-risk groups for...